The US and Japan coordinated to buy yen and counter speculative selling, after months of preparation. Japan's weak yen has pushed up import costs and household pressure, and the BOJ is under pressure to keep raising rates. For a Thai SME, the direct effect is indirect: watch for regional currency volatility affecting the baht, import prices for Japanese goods, and competition from Japanese exporters whose products get cheaper. No immediate action is needed; check your yen-linked supplier contracts if you import from Japan.